How does the narrator in “The Pit and the Pendulum” display bravery while he is in the chamber?

How does the narrator in “The Pit and the Pendulum” display bravery while he is in the chamber?
How does the narrator in “The Pit and the Pendulum” display bravery while he is in the chamber?
How does the narrator in “The Pit and the Pendulum” display bravery while he is in the chamber?

 

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